Gang-plow harrow



(N0 Model.)

W. A. ZU1VIWALT. GANG PLOW HARROW.

N0. 433,60& Patented Aug. 5, 1890.

UNITED STATES PATENT OFFICE.

WILLIAM A. ZUMWALT, OF FARMINGTON, OALIFORNIA.

GANG-PLOW HARROW.

SPECIFIO'A'IION forming par1; of Letters Patent N0. 433,608, dated August 5, 1890.

Applioation filed May 20,1s90. SerialNo.3528. (.Nomodel.)

T all wlwm it mcoy concern:

Be it known that I, WILLIAM A. ZUMWALT,

'a citizen 0f the United Staates, residing ab Far1nin gtonin the county of San Joaqnin and State of California, hzwe invented certain new and usefu1 Improvements in Oombined Adjustable Gang-Plow Harrows; and I (10 dec1are the following t0 be a fu1l, cleam, -and exact description of the invenui0n, such as will enable ohers Ski1led in the art t0 which it appertains to make and use the same, reference being had to the accompan'ying drawings, and to rhe letters of reference marked thereon, which form a paro 0f this specification.

My invention re1ates t0 an improvement in eombining a gang-plow and a harrow; and it consists in the combination, With the main beam 0f the gang-plow, 0f a harrow which iS adjusoable both as t0 Width and depth.

111 the aceompanying drawings, Figure l is an elevation showing my encire invention. Fig. 2 is a plan of a portion of the plow-beam und of the harrow attaehrnen. Fig'. 3 is a detached view 0f a harrow-standard.

- A represents the mein beam of a gangplow, t0 which any desired number of plows B may be seeured by bolts c. A vertical standard O, having an angular head, is bolted near each p1ow, and is provided With a sl0t taking a holt C which also engages With a vertica1 standard O provided Wit h a s1ot CO1- responding to that of the standard C. The Standard C is provided With a stont foob E, to which is flexibly attached a horizontal bar D, having a. short s1ot ab is inner end,whieh has a bolt"gl, t"p Which is attached aface-block D. T0 tihe reanof the bar D is attached fl1e harrow-bar D having the teeth F at its real,

wund beingprovided with a slot at its front end, by means of which it is seeured t0 the bar D by bolts e.

If preferred, the heads 0f ehe standards C may be secnred o0 the beam A by the bolts c, which secure the standards B t0 the beam A.

By means of the slos in uhe standards O the standards C are vertically adjust-able and the height 0f the harrow-bar made t0 eonform t0 the depth ab whichthe plows B may be Set.

By means 0f the s10ts in the harrow-beams D the Width 0f ent of the harrows may be adj ueted, es the sty1e of p1ows shown hzwe a tendency to 1ezwe a ridge 0'E earth, which the following harrows Will remove.

In light soils t-he flexible attaehrnentof the Standards C and beamsD is sufficient, as the weight 0f the harrows Will cause thern t0 remain in the ground when tl1e gang-plow 1's moving; but in stiif 1ands the faeeblocks D must be moved up c1osely L0 the feet E of the standards C and nhe nuts of the bo1ts d screwed up tightly, so as t0 make a rigid counection 0f the standards O and bezmns D.

Having thus described rny invention, what I elaim as new andof my invention is A combined adjustable gang-plow harrow eomposed of the main beam A, having Suitable plows B, in conneem'on With a series of adjnstable harrows, consisting of the slotted standards O, attaehed to' the beam A, the, standards C attached u0 the standards C and having the feet E, the bare D, flexibly or rigidlyattaehed to the feetE and provided with s1ots carrying the bloeks D and the slotted adjustable harrow-bars D attached t0 the bare D and having the teeth F ab their outer ends, all substantially as shown and deseribed.

In testimony whereof I affix my signature in presence 0f two witnesses.

WVILLIAM A. ZUMWALT. W itnesses:

JOSHUA B. YVEBSTER, JAMES T. SUMMERVILLE. 

